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38808219 = 312936073
BaseRepresentation
bin1001010000001…
…0101010011011
32201000122212110
42110002222123
534413330334
63503443403
7650602332
oct224025233
981018773
1038808219
111a9a720a
1210bb6563
13806a258
145222d19
153618ae9
hex2502a9b

38808219 has 4 divisors (see below), whose sum is σ = 51744296. Its totient is φ = 25872144.

The previous prime is 38808191. The next prime is 38808221. The reversal of 38808219 is 91280883.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 38808219 - 28 = 38807963 is a prime.

It is a super-2 number, since 2×388082192 = 3012155723903922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38808239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6468034 + ... + 6468039.

It is an arithmetic number, because the mean of its divisors is an integer number (12936074).

Almost surely, 238808219 is an apocalyptic number.

38808219 is a deficient number, since it is larger than the sum of its proper divisors (12936077).

38808219 is a wasteful number, since it uses less digits than its factorization.

38808219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12936076.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 38808219 is about 6229.6243064891. The cubic root of 38808219 is about 338.5643589167.

The spelling of 38808219 in words is "thirty-eight million, eight hundred eight thousand, two hundred nineteen".

Divisors: 1 3 12936073 38808219